Rail-stop.



H. J. MELVILLE.

RAIL STOP. APPLICATION FILED MAR. 30, 1914 Pmanted July 23., m

. to provide l which:

pnrr s- TO RICHARD A. MCDONALD, 9F CHIC-AGO, ILLINDIS.

RAIL STOP.

Specification ofLetters Patent.

Patented sta at .fioit.

Application filed. March 30, 191-4. Serial No. 828,266.

To all whom it may concern: Be it known that I, HERBERT J. MEL- VlLLE, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny State of Pennsylvania, have invented certain new and useful Improvements in Rail-Stops, of which the following is a specification. My invention rail stops for use in limiting the travel of car wheels on a rail. Such devices are in extensive use with steam shovels, locomotive cranes and similar machinery.

The objects of my invention are: let, to provide a rail stop which may be easily clamped in any desired 2nd, to provide a rail stop which may be readily detached and removed from the rail. 3rd-, =to provide a device of the kind which may be constructed of cast or forged parts without any machining. 4th, to provide a rail stop which may be set up close to a-car wheel and clamped in such position. 5th, a device of this character which is light yet strong and rigid, and so simple that it will stand rough usage for long periods without getting out of order.

To these ends my invention comprises the various parts arranged and correlated as shown in the accompanying drawings in v Figure 1 i proved rail stop, Fig. 2 is a'sectional elevation of the same showing it clamped to a rail, and Fig. 3 is a similar view showing the device in released position. p

The essential elements. of my device are a frame, a wedge and a pair of clamps.

In working position the frame 1 sets on the head of a T rail 2, the bottom surface 3 resting on the rail head. The rear end of the frame 1 forms a box shaped casting provided with a rectangular opening or core 4. inclosed by a rear wall 5, a front wall 6 and two side walls 7 and A rib 9 ex tends forwardly from the front wall 6 the same having a thickened upper edge 10 curved to fit the tread of a car wheel resting on the rail it the front end of the rib 9 a pair of depending lugs 11 are formed having an opening between them large enough to span the rail head for the purpose of fixing the front end of the rib 9 laterally of the rail.

relates to rail clamps or.

position on a T rail.-

, the wedge 14 -is released s a side elevation of my imtightened, the car can Core-d slots 12 and 13 are formed respectively in the side walls 7 and 8 to receive the wedge 14. side walls 7 and S are cut away to clear the clamps as shown at 15 and 16. A tr;- angular rib 17 connects the rear wall 5 and the front wall 6 and serves to spread the clamps as will appear later.

i The clamps 18 are formed as shown having hooks 19 their lower ends to gr p the rail head, and their upper ends 20 're thinned or tapered as shown to reduce their weight and the space required for them. The clamps 18 are each provided with a slot 21 hrough which the wedge 14 extends.

Lifting lugs 22 are provided as shown, and a handle 23 engaging a pin 2% which passes through the upper ends of the clamps 18 serves to raise the clamps to insert the wedge.

hen the wedge 14 is not in place the clamps 18 drop by their own weight to the position shown in Fig. 3, being separated by the rib 1?, the pin 24 resting on the side walls 7 and 8.

' The stop may be lifted by the lugs 22 and placed on the rail. By lifting the handle 23 the clamps can be raised and the wedge 14 inserted and driven home. When the clamps 18 will usually drop into release position, but if they fail to do so a rap on their upper ends with a hammer will loosen them.

The device as described obtains a very powerful grip .on the rail such that a heavy steam shovel or crane may be safely locked endwise on the track (by the use of 2 or L clamps).

' The proj so that a portion is transferred to may be set up close against the wheels (front and rear) before the wedges 14: are be secured without lost motion in either direction.

Various changes and modifications may be made by-those skilled in the art without departing from the spirit and scope of my invention as covered by the following claims.

I claim:

1. A rail stop comprising a body portion to engage the rail head, a pair of rail en ecting rib 9 fits under the wheel or all of the wheel weight The lower portions of the the clamp and as the same the clamps to tighten the latter.

2. A rail stop, comprising a body portion to engage the'rail head, a rectangular chamber at the rear thereof, a curved rib extending forwardly from said chamber, to engage the-wheel tread, a pair of lugst'o strach,

die the rail head at'the front end of said rib a air of clam as within said chamber 7 7 a pair of [slots in the side walls of said chamber, a slot in each ofthe clamps in line therewith, and a wedge extending transversely of the rail and above the san1e,.and passing'through all of said slots to tighten the clamp.

3. A- rail stop comprising a body portion to engagethe rail head, a rectangular chamber at therear end thereof, a rib ex tending across the lower end of said chamber parallel to the rail, a pair of clamps within said chamber one on each side of said rib and projecting above and below the'walls of said chamber, anda wedge passing through the side walls of said chamber tweezeandithrough said clamps to bind the latter to the rail.

4:. A rail stop, comprising a body portion to en 'aee the rail head a rectanmilar cham- D a, 9 b

vand a rib extending across the lower end of said chamber between the clamps for antomatically separating the lower ends of the clamps when they are lowered so their lower ends will clear the rail and the device inay be lifted bodily ed the rail.

5. Arail clamp, com rising a box shaped guide, a pair of hoo ed claxnps'passmg through. said guide and adapted to engage tehead of a rail, and a wedge passing t rough the the latter 7 In testimony whereof I hereunto affix my signature in the presence of two witnesses.

HERBERT J. MELVILLE. lVitnesses RICHARD A. MCDONALD, VV. W. lsinomnnnn,

guide-and the clamps to tighten 

